12243544402 has 4 divisors (see below), whose sum is σ = 18365316606. Its totient is φ = 6121772200.

The previous prime is 12243544309. The next prime is 12243544429. The reversal of 12243544402 is 20444534221.

12243544402 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 11459488401 + 784056001 = 107049^2 + 28001^2 .

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3060886099 + ... + 3060886102.

Almost surely, 2^12243544402 is an apocalyptic number.

12243544402 is a deficient number, since it is larger than the sum of its proper divisors (6121772204).

12243544402 is an equidigital number, since it uses as much as digits as its factorization.

12243544402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6121772203.

The product of its (nonzero) digits is 30720, while the sum is 31.

The spelling of 12243544402 in words is "twelve billion, two hundred forty-three million, five hundred forty-four thousand, four hundred two".